/*
 * semaphore.h
 *
 * Copyright (C) 2017 Aleksandar Andrejevic <theflash@sdf.lonestar.org>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __MONOLITHIUM_SEMAPHORE_H__
#define __MONOLITHIUM_SEMAPHORE_H__

#include "object.h"

#define syscall_wait_semaphore(s, c, t) syscall_wait_for_one((s), (void*)(c), (t))

#define syscall_create_mutex(n, i, h) syscall_create_semaphore((n), (i), 1, (h))
#define syscall_open_mutex(n, h) syscall_open_semaphore((n), (h))
#define syscall_wait_mutex(m, t) syscall_wait_semaphore((m), 1, (t))
#define syscall_release_mutex(m) syscall_release_semaphore((m), 1)

#define syscall_create_event(n, h) syscall_create_mutex((n), 0, (h))
#define syscall_open_event(n, h) syscall_open_semaphore((n), (h))
#define syscall_wait_event(e, t) syscall_wait_mutex((e), (t))
#define syscall_reset_event(e) syscall_wait_mutex((e), 0)
#define syscall_signal_event(e) syscall_release_mutex((e))

sysret_t syscall_create_semaphore(const char *name, dword_t init_count, dword_t max_count, handle_t *handle);
sysret_t syscall_open_semaphore(const char *name, handle_t *handle);
sysret_t syscall_release_semaphore(handle_t semaphore, dword_t count);

#endif
